Upholstered bottom.



P. RoBvBR.

UPHOLSTERED BOTTOM.

APPLIOATIOH FILED DBO. 31. 1910.

Patented Apr. 11', 1911.

UNITED sTATEs PATENT oEEIoE.

FIBLTDERICK'` BOEVER, OF SHEBOYGAN, WISCONSIN.

UPHOLSTERED BOTTOM.

Specification of- Letters Patent.

Patented Apr. 11, 1911.

Application tiled December 31, 1910. Serial No. 600,217.

tain new and useful Improvements 1n Upbolstered Bottoms; and I do hereby declare thatl the following is a full, clear, and exact description thereof.

' My invention refers to furniture upholstery and has for its object to provide a simple and durable resilient bottom for beds, chairs or analogous articles, the bottom being primarily of basket-weave type composed of flexible members, so constructed and arranged that all of the membersmre supported by a frame, the ends of each member being in yielding connection with an auxiliary frame, whereby tension of the bottom is obtained.

4Another object of my invention is to provide a rectangular frame for the woven members, the oppositely disposed su porting rails of the frame being upon di erent elevations, whereby the woven members as a whole, when subjected to spring tension, will present more or less of a convexed supporting surface.

lVith the above objects in view the invention consists of certain details of construction and combination of parts as hereinafter set forth with reference to the accompanying drawings and subsequently claimed.

In the drawings Figure 1 represents a side elevation of a bed embodying the features of my invention, with parts broken away and parts in section to more clearly illustrate certain structural features; Fig. 2, a plan view of the same with parts broken away and parts in section, and Fig. 3, a cross-section of the bed as indicated by line 3--3 of Fig. 1.

Referring by characters to vthe drawings, 1 and 1I -represent pairs of posts having secured thereto a horizontally disposed rectangular main frame, which frame is composed of pairs of side and end rails, 2, 2", and 3, 3, respectively, the rails being preferably circular in cross-section. The side and end rails of the main frame are secured together by corner unions 4 having vertically disposed sleeves 4 that are fitted about the posts and held at a predetermined adjusted elevation by set-screws 5. The side-rails 2,

bowed upwardly from an intermediate point to the head elevated upon a slightly higher plane than the bottom end rail 3a. By this construction an imaginary straight line running from the head to the bottom end rail will thus be upon a higher plane throughout than the side rails, the height of which plane gradually diminishes in either direction from the point of intersection betweenV the straight and inclined portions of the side rails.

Longitudinal and transverse members, preferably fiat tapes 6, 6 interlocking in the form of a basket weave and having their terminals extending over the end and side rails respectively are provided. The ends of these two series of tapes are fitted with reinforced apertured stays 7 for the reception of individual coiled springs 8, the opposite ends of which springs are secured by eyebolts 82l to an auxiliary frame 9. The auxiliary frame is rectangular in shape and conforms approximately to the contour of the main frame, the corresponding members 10, 10, and 11, 11, of said auxiliary frame being connected at their intersecting corners by vertically apertured brackets 12, which brackets are secured thereto by suitable rivets, the apertured brackets being looselyv mounted upon the posts.

The auxiliary frame 9 is arranged to be adjusted upon the posts by means of 13 that engage threaded sections 14 of said posts, the nuts being adapted to impinge against the upper 'face of the brackets 12, whereby the auxiliary frame is forced downward in opposition to the spring-controlled tapes 6 and 6a. Thus the entire series of transverse and longitudinally disposed sets of flexible tape members are drawn taut over their respective pairs of main frame rails, it being apparent, owing to the difference in elevation of said frame members, that when the strips are tightened they will presenta greater or less degree of convexlty' in cross-section upon the upper face of the weave, as clearly shown in F1g. 3.

By the described mechanism it will be seen that an upholstery support which is flexible, cool and sanitary, is obtained, there being no boxing or the like into which dust may accumulate and, owing to the individual spring-connections of the woven fabric, it will readily yield and accommo- 2, of the frame are preferably inclined or l date itself to the contour of a body thereon,

end rail 3, whereby the latter is nuts the resiliency being adjusted in proportion/-v to the load by raising or lowering the auxiliary frame.

In practice the main' frame can readily be slipped from the posts as well as the auxl l. An upholstered bottom comprising a rectangular' frame, supporting posts for the frame, two series of interwoven tapes supported-upon the frame, the ends of one series being extended over the side members u of the frame and the ends of the other series being extended over the end members of said frame, lan auxiliary frame mounted upon the posts, screw-threaded sections carried by the posts, nuts engaging the screwthreaded sections adapted to impinge against the auxiliary frame whereby the of each series.

:same is adjusted, andv coiled springs'connecting theH auxiliary frame and tape-ends 2. An upholsteredbottom comprising a rectangular frame, supporting posts for the frame, two series of interwoven tapes supported upon the frame, theends of one series being extended over the side members of the' frame, and they ends of the other series being extended over the end members of the frame, an auxiliary frame mounted y upon the postsand under the rectangular drame, means in connection with thr `posts for adjusting the 'auxiliary frame with relation to said rect-angular frame, and coiled springs connecting said auxiliary lframe and tape ends'of each series.

In testimony that I claim the foregoing I have hereunto set my hand at Sheboygan, in the county of Sheboygan and State of `Wisconsin, in the presence of two witnesses.

FREDERICK Roiavna. Witnesses:

CHAS. ZEINEMANN, EWALD F. PnwsAr, 

